Antifrost shield for windows



Oct. 23, 1934. B. G. sHAPlRo Er Al. 1,977,899

ANTIFRosT SHIELD FOR wINDows Original Filed Jan. 9. 1932 IG l2 PatentedOct. 23, 1934 AUNITI-:o STATES 1,977,899 4ANTIFRST SHIELD FOR WINDOWSBernard G. Shapiro and Samuel Shapiro, Minneapolis, Minn.; said BernardG. Shapiro assigner to Samuel Shapiro Application January 9, 19:92,serial No. 585,774' Renewed March 10, 1934 4 claims.

Our invention relates to anti-frost shields for windows. An object ofthe yinvention is to provide a device of this character which may bereadily applied to windows to prevent the formation of 5 frost thereonor upon a portion thereof during cold weather. Our device is consideredparticularly applicable to windshields and other windows of motorvehicles, but may be applied to al1 ,win-

' dows where frost is liable to form and obscure ll the vision. Devicesof this character with which we are familiar have hitherto carriedopaque edges, which not only give an unsightly appearance but obscure aportion of the vision through the window. We overcome theseobjectionable I5 features .by employing transparent tape for adhesivelysecuring the edgesfof the shield to the window in such mannerthat adead-air space is produced between the window and the shield. Wepreferably employ transparent tape which has been subjected towaterproofing treatment in order to insure that thetape shall remainpermanently transparent.

The full objects and advantages of our inven tion will appear inconnection with the detailed description thereof, and the novel featuresof our Y invention will be particularly pointed out in the claims.

In the accompanying drawing whichlillustrates some of the forms in whichour invention may be embodied, 9

Fig. 1 is a view in perspective of an automobile windshield and sidewindow with anti-frost shields made in accordance with our inventionsecured to the inner sides thereof. Fig. 2 is a fraglatter form beforethe application of a` .cushion member. Fig. l0 is a sectional viewshowing the cushion member applied. Fig. 11 is a sectional view showingthis form of the invention-applied 5o to a window.

In the embodiment shown in Figs. 3, 4 5, 6 and?, a plate of glass 12 isprovided with an integrally molded offset peripheral margin 14 having a.beveled face 16 and an oppositely-disposed g5 face 18 lyingparalleltothebodypo'rtion ofthe parent tape is placed over the exposed face ci thementary view in perspective of a transparent' (CI. Z0-40.5)

plate. In order to secure ythe shield to a window W, such as thewindshield or other window of an automobile, we make use of transparentadhesive tape which preferably has been rendered waterproof. A strip ofsuch transparent tape is designated in Fig. 2 by the numeral 20. Beforeapply-4 ing the shield to a window, the marginal face 18 of the shieldis preferably covered with a cushion member 22 of the transparent tapeas shown in Fig. 6. In order to apply the shield the cushion member 22attached as above stated is placed against the window and then strips 24of the transparent tape are secured to the beveled face 16 and to thewindow so as to extend around the periphery of the shield, as shown inAFig. 7, and thereby form an air-tight `ioint to produce a deadair spacebetween the window and the body of the shield.

In the embodiment shown in Figs. 8, 9, l0 and 11, a flat glassplate 26is provided with an 75 oiset peripheral margin produced by cementingnarrow glass strips 28 peripherally around one of the faces of theplate. -Before applying the shield to a window, a cushion member 30 ofthe 'transto glass strips 28 and around the peripheral edges of saidstrips and the edges ofthe plate 25. The member 30 thus serves not onlyas a cushion but covers the rough edges of the strips 2u and plate 26.In order to apply the shield the stripe 2t covered with the cushionmember 30 are placed against the window and then strips 32 ci' thetransparent tape are secured to the margin of the plate 26 and to thewindow, so as to'extend around the peripheryv of the shield, as shown inFig. 11, and thereby form an air-tight joint to produce a dead-air spacebetween the window and the body of the shield.

The operation and advantages of our invention will now be obvious. Incold weather the shield can be readily attached to windows such aswindshields and other windows of motor vehicles which are liable tobecome coated with frost which obscures the vision therethrough. Onaccount of the fact that 'the shield is secured to the window in spacedair-tight relation thereto, a dead-air space `is produced which preventsthe formation of frost over the area protected by the'shield. In thecase of motor vehicles driving is made much easier and safer, and in thecase of display windows. persons on the outside can 'readily observe theobjects on display on the inside. We consider glass to be a particularlydesirable material for the shields, since it is hard and not essuyemnedor auned, anda not name so 11 the transparent cushion not only assistsin making an air-tight joint, but avoids the objectionable feature ofglass rubbing on glass. 'Owing to the rigid nature of the glass shieldit is not necessary to provide any supporting members between theintermediate portions'oi theshield and the window even when the shieldsare made of large size.

We claim:

1. An anti-frost shield for windows, comprising a glass plate having anoiIset peripheral margin carried therewith adapted to rest upon a windowto produce a dead-air space, and transparent adhesive tape Aior securingsaid margin to the window.

2. An anti-frost shield for windows, comprising a glass plate having anoffset beveled peripheral margin molded integrally therewith adapted torest upon va window to produce a dead-l air space, and transparentadhesive tape secured to said beveled margin and the window.

3. An anti-frost shield for windows, -comprising a glass plate having anoilset peripheral margin molded integrally therewith, said margin havinga face parallel to the body of said plate, a transparent cushion betweensaid face 'and a window, said margin having its other face beveled, andtransparent tape secured to said beveled face and the window whereby' adead-air space is produced between the window and the body of theshield. v

4. An anti-frost shield for windows. comprising a glass plate having anoffset peripheral margin molded integrally therewith, said margin havinga face parallel to the body of said plate and adapted to rest upon awindow to produce a dead-air space, said margin having its other facebeveled down to a thin outer edge, and transparent tape secured to saidbeveled face and a window.

BERNARD G. SHAPIRO. SAMUEL SHAPIRO.

